Reddit reviews The Truth of Our Faith

I don't know whether a catechism is the best kind of resource to provide. He should contact the priest nearest to him and establish a relationship - let the priest guide him. One way or another, he will need a spiritual father.

Depending on your friend's disposition, I might be more inclined to recommend Elder Cleopas' The Truth of Our Faith. Personally, I would definitely not recommend any of Clark Carleton's books. They are not inaccurate - I just think they are too polemical.

I would also strongly recommend Everyday Saints. The book is not any kind of catechism, but it gives a very strong sense of what an Orthodox life feels like, even though it is written from a Russian monastic perspective. The same holds true for Mountain of Silence, which is from the perspective of a Greek layperson.

I posted this a while back to a similar question. In addition to reading, try to visit a church if you can, so you can see theology in action.

That being said, this is a wonderful little primer:

http://oca.org/orthodoxy/the-orthodox-faith

Also, I cannot recommend the following book highly enough. It's an excellent book for any beginner (or anyone really):

http://www.amazon.com/Truth-Faith-Elder-Cleopa-Romania/dp/9608677807

Like everything else, there is not much of an "official" anything in the Eastern Orthodox Church, but somehow it all hangs together.

I know more or less what you are getting at. Give The Longer Catechism of Metropolitan Philaret a spin.

For contrasting Orthodox beliefs with those of what we call "sectarians" (non-Orthodox), check out The Truth of Our Faith, vol. I.

Neither are exactly the sort of "checklist" you are looking for, but I think they might serve your purpose.